Nothing has changed on my laptop. i use Windows 7 32bit in VMWARE. I can get the 2 black cirlces everytime however i get the above error.
Sometimes i can read the ECU but then when i go to write to the ECU i get the above error.

This is weird. This issue is not the first I heard if this happening. I have no clue why. This also happened to one my friends trying to code a F series. His cable and computer would not connect at all but when I tried mine it worked. After I coded the car, he went back to try and connect with his setup, it worked! No explanation.

yeah sometimes i can get all the way to checkcoapi.... then when i execute SG_CODE.... it gives me errors
other times when i click E89 then CAS i get the message straight away.
Could it be bad cable. I have had the cable for about a year and only just started happening